Hacksaw-frame.



F. W. BANGERT.

HACKSAW FRAME.

APPIIcATIoN FILED ocT. I. I9I5.

Patented M am I4, 1916 -IIIIIIIIIIIIIIIIIIIIIIIIIL- IHIIIIIIIII= HHHHHIIIHW.

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w/INESSES.-

By @can blade holder.

FREDERIK WILLIAM BANGERT, F HALEDN, NEW JERSEY.

HacKsaw-rearan.

Specification of Letters latent. Patented Edgar, jld, 191%.

' Application filed Gctober 7, 1915. Serial No. 554,512.

To all whom t may concern.

Be it known that l, Fnnoniziii WILLIAM BANGERT, a subject of the Emperory of Germany, and resident of Haledon, in the county of Passaic and State of New Jersey, have invented certain new and useful linprovenients in Hacksaw-Frames, of whirl] the Jfollowing is a specification.

Hack saws of the usual construction are not capable of holding a saw after the end upon which the aperture for engaging the blade pin was arranged .has been broken away.

The present invention provides an organization of parts in which a saw blade of any length may be properly held, ready for use, and in which a blade tightening device of new construction is provided permitting the saw blade tobev held underproper tension, whil. in usepz'- T, e invention' is illustrated in Figure 1 in a vertical "section showing the saw blade inserted in the blade guide. Fig. 2 is a side elevationjof a hack saw, showing the vsaw blade in normal condition. Fig. 8 is a similar view showing a saw blade, one end of which has been broken 0E engaged in the frame. Fig. Il is asimilar view in whichthe saw blade is shown attached to auxiliary blade pins so as to have the plane of the saw blade at right angles to the plane of the Figs. and 6 are vertical cross ,sections of the movable blade end holder, on the line 5-5 of Fig. 1, and on the line 6 6 of Fig. 2. Fig. 7 is an elevation of the lreeper plate. Fig. 8 is a section on the lined-8 of Fig. 1 of the stationary blade end holder. Fig. 9 .is a section on line 9-9 of Fig. 4; of the movable blade end holder, showing the auxiliary pin.

A handle 1 carries the frame or holder, made of sheet inetal having a tubular elenient 2 and a continuous groove alon the entire'length of holder. The end ol the holder is provided with a pivot 3 upon which is movab'ly secured the blade end holder 4, having a blade pin 5 for engaging an aperture at one end of the saw blade. An auxiliary blade pin 6 is, secured at the end of the blade end holder for permitting the saw blade to be heldin a position at right angles to the plane of the frame.

A screw 7 engages the end of the frame 2 and is provided with a head 8, adapted to rest against the outer side of the upperv end of the blade end holder 4, whereby pressure purpose of holding one end of the'saw blade,

should the end having the aperture for engaging the blade pin be broken oi. This keeper plate is pivoted at 14 to the blade end holder, and provided with a recess 15 adapted to engage a stop pin 16 on the movable blade end holder. A tightening screw 17 serves to secure together the keeper plate and the movable blade end holder, so that the end of a saw blade located between, is held against displacement. i

A locking lever 18 is arranged with its The latter is provided with a stern 19, on one side of the movable blade end holder and has a semi-circular section frame when the lever '18 is in one position l'and be disenga ging therefrom, when the lever` is in another position, so that the blade end holder 10 can readily be' moved 'along the frame.

ln the normal operation of the saw frame, the aperture at oneend of a saw bladeis placed upon the pin 5 of the blade. end holder 4, then the movable blade endholder 10 is shifted until the aperture at the other end of the saw blade can be placed upon the blade pin 11. The keeper plate 13 is. turned on its pivot so as to cover the end of the saw N 20, adapted to engage the notches 9 of the blade, the screw 17 is tightened and the lockl ing lever 18 turned so that the semi-circular stem 20 engages one of the notches 9 of the frame bar. The screw 7 at the free end of s the' frame baristhen turned and the blade end holder 4, 'swinging on its pivot 3, places the saw blade under suflicient tension. ln y tightening screw 17 forces the blade andI l.

holder and the keeper lplate together, to securely hold the broken off blade end. In

l case that itis intended to secure the saw caused to engage the auxiliary blade pin 6,

While the other aperture is engaging the auxiliary blade p'in 12 of the movable blade end holder. The saw is then placed under tension 'in the manner already described by operating the screw head 8.

Claims 1. A saw frame including a grooved frame bar having a tubular backing, means pivoted to one end of' said frame. bar for holding one en'd of a saw blade. a screw operative in the tubular backing of said frame bar, coacting with said holding means for tensioning said saw blade7 and slidable means on said frame bar for holding the other end of said saw blade.

mmaea The combination with a tubular frame bar having flanges depending therefrom, a saw attaching means at one end of said frame bar pivoted to said flanges, an adjusting screw operative in said tubular Jframe for actuatingv said attaching means, a handle at the opposite end of said frame bar, an element slidable on said tubular frame bar, having a depending portion engage-able with notches formed in the flanges of said frame bar, means for engaging a saw with said sliding elements, and means for positioning said elements with respect to any of the notches in said flanged frame.

Signed at New York, in the county of New York and State of New York this 4th" day of September, A. D. 1915.

FREDERIK WILLIAM BANGERT.

lVitnesses v l". J. NEKARDA, y Lum. A. Kol-ILMANN. 

